<!DOCTYPE HTML>
<html>
<head>
    <title>My WebSocket</title>
</head>

<body>
<input id="text" type="text" />
<button onclick="send()">Send</button>
<button onclick="closeWebSocket()">Close</button>
<div id="message"></div>


</body>

<script type="text/javascript">

    let ws = null;
    //判断当前浏览器是否支持WebSocket
    if ('WebSocket' in window) {
        ws = new WebSocket("ws://localhost:8888/myWs?token=dsadsadsdsads");
    }
    else {
        alert('当前浏览器 Not support websocket')
    }

    //连接发生错误的回调方法
    ws.onerror = function () {
        setMessageInnerHTML("WebSocket连接发生错误");
    };

    //连接成功建立的回调方法
    ws.onopen = function(event) {
        console.log("ws调用连接成功回调方法")
        //ws.send("")
    }
    //接收到消息的回调方法
    ws.onmessage = function(message) {
        console.log("接收消息：" + message.data);
        if (typeof(message.data) == 'string') {
            setMessageInnerHTML(message.data);
        }
    }
    //ws连接断开的回调方法
    ws.onclose = function(e) {
        console.log("ws连接断开")
        //console.log(e)
        setMessageInnerHTML("ws close");
    }

    //将消息显示在网页上
    function setMessageInnerHTML(innerHTML) {
        console.log(innerHTML)
        document.getElementById('message').innerHTML += '接收的消息:' + innerHTML + '<br/>';
    }

    //关闭连接
    function closeWebSocket() {
        ws.close();
    }


    //发送消息
    function send(msg) {
        if(!msg){
            msg = document.getElementById('text').value;
            document.getElementById('message').innerHTML += "发送的消息:" + msg + '<br/>';
            ws.send(msg);
        }
    }
</script>
</html>